import java.util.Scanner;

public class Demo1 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int count = 0;

        for(int i = 1; i < n; i++) {
            int sum = 0;
            for(int j = 1; j < i; j++) {
                if(i % j == 0) {
                    sum+=j;
                }
            }
            if(sum == i) {
                count++;
            }
        }

        System.out.println(count);
    }
}
